In the 1950s, rumors spread that Hitler had escaped to a secret Nazi base at the South Pole. In 1952, Dwight D. Eisenhower said: "We have been unable to unearth one bit of tangible evidence of Hitler's death. Many people believe that Hitler escaped from Berlin." When President Truman asked Joseph Stalin at the Potsdam conference in 1945 whether or not Hitler was dead, Stalin replied bluntly, 'No.' Stalin's top army officer, Marshall Gregory Zhukov, whose troops were the ones to occupy Berlin, flatly stated after a long thorough investigation in 1945: "We have found no corpse that could be Hitler's." The chief of the U.S. trial counsel at Nuremberg, Thomas J. Dodd, said: "No one can say he is dead."
See more on this in The Omega File. 18 - Hitler Escaped.
According to these rumors there is a real continent, with plains, valleys, mountain peaks up to 15,000 feet. The temperature in the interior is around zero (?) in the summer, and never drops below 20 or 30 degrees below in the winter. In other words, it is not as cold as in parts of North Dakota or Canada." (especially underground, where the natural temperature would be in the 50's, even below snow and ice. - Branton) "Bonjour" magazine, the "Police Gazette," and the Paris newspaper "Le Monde" all had articles about Hitler's South Pole hideaway. Admiral Doenitz, in 1943, stated, "The German submarine fleet has even now established an earthly paradise, an impregnable fortress, for the Fuhrer, in whatever part of the world." Although he did not specify where the exact location was, "Bonjour" pointed out that in 1940 Nazi engineers had begun construction of buildings that were to withstand temperatures to 60 degrees below zero. There have been strong rumors, from the end of the War, that Hitler escaped to his South Pole fortress.
Nazi Germany began to explore the Antartic in 1938 (The German grasping at the Antarctic)
Some claim that a secret war against the Nazis who escaped was carried on by the United States Navy, led by Admiral Byrd. A film documenting the same is available through this linked website.